sellon



(No odel. I q 2 'Sheets Shee t 1.

J. SySEL'LON.

INGANDESCENT GAS BURNER.

No. 377,502. Patented Feb. 7,1888; i

N. PETERS, mlimwmw. Washington. 0.0.

(No Model.) 2 Sheets-Sheet 2.

J; SLSELLONQ INGANDBSGBNT GAS BURNER. No. 377,502. 7 Patented Feb. 17,1888.-

UNITED STATES.

PATENT OFFICE.

JOHN S. SELLON, OF HATTON GARDEN, COUNTY OF MIDDLESEX, ENGLAND.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 377,502, dated February7, 1888. Application filed August 27, 1887. Serial No. 248,060. (Nomodel.) Patented in England January 25, 1887, No. 1,150.

, Great Britain on the th of January, 1887,

N 0. 1,150,) of which the following is a specification.

My invention has for its principal object to provide a lamp for burninga mixture of gas and air in such a manner that the most perfectpractical combustion of the gas is effected, and the lighting effect isobtained in a convenient and unobstructed manner, the said lightbeingcapable of being given in a downward direction or all aroundwithout practically any impediment and with great steadiness.

In order that my invention may be fully understood, I will describe thesame with reference to the accompanying drawings,premising, however,that I do not limit myself to the precise forms and arrangements thereinillustrated, since it will be evident that they may be considerablyvaried withoutdeparting from the'spirit of my invention.

In said drawings, Figure 1 is a diagram illustrating the simplest formof a lamp constructed in accordance with the invention. Fig. 2isavertical section (partly in elevation) of a table-lamp,and Fig. 3 is asimilar view of another form'of lamp embodying theinvention.

Referring to Fig. 1, the lamp consists of a glass tube, (or of twoglasses placed together end to end,) G and I. The lower portion, G,constitutes the mixing-chamber and the upper part, I, constitutes thechimney. Between them is placed a disk, a, of reticulated orperlforat-ed metal or material, which is capable of being renderedincandescent. The disk or piece a may be termed the gauze orincandescent. -In operation a supply of air and gas passes to thechamber G,through pipe 0, and is ignited on the upper side of the gauzeor incandescent a. The latteris shown as being fixed in a ring or frame,F, which may be made of metal, asbestos, talc, or other incombustiblematerial. The radial lines show how the light from the incandescentgauze a is diffused on all sides.

In Fig. 2, Gis the mixing-chamber,to which gas under ordinary pressureis supplied by a pipe, B, passing through the column 0 of the lamp, andbeing provided with a cock, D, for regulating, as required, the passageof gas to the burner. In the column 0 and below the top of the gas-pipeB are openings E, through which air is admittedto the interior of thecolumn to mix with the gas in its. passage to the burner, and the amountof air admitted may be governed by regulating the size of the openingsby a covering-ring or by regulating the supply of gas according to itspressure.

G is'the chamberinclosed by a globe or glass over the gas and airinlet,which chamber may be continuous, as a globe, with the exception ofthe opening for the gauze; but it is here shown as a bowl or basinprovided witha cover, H, in which the hole for the gauze a is formed,which gauze, when the mixture of gas and air (admitted to the chamber Gand passing through it) is ignited, becomes incandescent and emits apowerful light,which radiates through the chamber. In order to increasethe light, the under surface of the cover H may be enameled, silverplated, or otherwise treated, so that it constitutes a reflector.

Above the cover H and surrounding the opening in which the gauze a isplaced there may be placed a chimney, I, which may be of any suitablematerial,transparent or opafiue.

Although in the drawings the gas and air are shown as'being suppliedfrom a pedestal, yet they may, if required, be led from above or at theside, and be admitted to the chamber G at any suitable point or pointsbeneath the game a, the chamber G serving in all cases as a mixing andheating chamber in which the gas and' air are received preparatory topassing into contact with the gauze a.

Fig. .3 illustrates a lamp in which the gas and air are led in from theside. The gas and air pipe 0 enters the side of an annularmixing-cha'rnber, G, with flanges g and g. The flange at g serves forthe bearing of the flange of the globe G, a washer of asbestus, g intervening. There is a space, g, between the flange and the inner wall ofthe chamber G through which the gas and air pass (as shown by thearrows) into thechamber G on their. way to the gauze a, to be thereconsumed and maintain the incandescence of the said gauze,

which 'is supported between asbestus, talc, or other suitable rings, j,secured to the flange g by the ring 9 and screws 9 The top closure, 9,of the chamber G serves to support the chimney I. The chamber G isformed with lugs g 9 the former for the screws which secure the chimneyand thelatter for the screws which secure the chamber G.

The gauze a may be of any material, metal, or alloy which will stand theheat, and it may be perforated or reticulated, and it may, if sodesired, be strengthened, as described in the specification of myapplication for Patent No. 15,287, of November. 23,1886, or if of metalmay have superposed or in any way attached to, inclosed in, or betweenorinterwoven with a material or prepared pieces of any of the earths,oxides, or preparations of metalssuch, for instance, as zirconium,lanthanum, ceruim yttrium, strontium, barium, thorinum, or the like,which can be rendered incandescent and emit light.

Having now described and particularly as certained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. A lamp or burner provided with a perforated orreticulated gauze or incandescent placed above a chamber havingtransparent sides or walls, and provided with an inlet for air and gas,substantially as described.

2. A lamp or burner comprising a chamber having transparent sides orwalls, inlets for air and gas to said chamber, a chimney, and a gauze orreticulated piece of refractory material placed across the opening fromsaid chamber to said chimney, substantially as described.

3. The combination of the globe of glass, the annular mixing chambercommunicating therewith, and the gauze or incandescent placed across thetop of the chamber inclosed by said globe, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two sub scribing witnesses.

JOHN S. SELLON.

